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EPUB Help

What is an EPUB file?

EPUB files are electronic books (ebooks) that can be read on mobile devices, dedicated electronic book readers, and on computers running ebook reader (eReader) software. The files have the extension of .epub. Our EPUB files should work on any reader that supports the EPUB standard (see a list of EPUB reader devices at Wikipedia).

Note: Some content that displays well online may not display in the EPUB version. When content relies on interactive features that eReaders don't yet commonly support, our EPUBs will have links that go from the ebook to the content online.

Where can I download EPUB files?

EPUB files can be downloaded from the Download dropdown at the top of content pages (as shown below), at the bottom of content pages, and from a content's metadata page.


'Downloads' dropdown in Content Action bar.

Figure 1: EPUB download in the Content Actions bar.


How do I use an EPUB file?

We give instructions below for reading EPUBs from our site on various devices using common software. For each of these, we have tested the instructions. Many other devices and software applications should work with our EPUBs and we welcome feedback and instructions for using additional readers. (Send email to cnx@cnx.org.)

Click on the links to go to instructions below in this page.

Instructions for loading EPUB files on different devices

Reading EPUB files in iBooks on an Apple iPad, iPhone or iPod Touch

If iTunes is managing your content

  • Download the EPUB file to your PC or Mac
  • From the iTunes menu, go to "File", then "Add to Library..."
  • Navigate to the directory where the EPUB was downloaded.
  • Click open and the EPUB file is added to iTunes.
  • Select the iPad in iTunes and select the books tab
  • Make sure the checkmarks for the new EPUB is checked.
  • Click the Sync button.
  • After the sync, the EPUB files should be on the iPad.

If you are manually managing your content in iTunes

  • Download the EPUB file to your PC or Mac
  • From the iTunes menu, go to "File", then "Add to Library..."
  • Navigate to the directory where the EPUB was downloaded.
  • Click open and the EPUB file is added to iTunes.
  • Select the "Books" listing in your library
  • Select and drag the desired EPUB to your device.
  • The content should be synced to the device.

Reading EPUB files in Stanza on your Apple iPhone or iPod Touch

To download our EPUB files using Stanza:

  • Install the Stanza application
  • Open Stanza
  • Select the "Get Books" button at the bottom of the screen
  • Select the Edit button in the upper right-hand corner
  • Select the "Add Book Source" option
  • Choose the "Web Page" button located under the URL text field
  • Enter a name such as Connexions
  • Enter the URL to the repository such as cnx.org
  • Select the "Save" button
  • Connexions will now be part of the "Get Books" option and the internal web browser will allow you to navigate to the EPUB you wish to download.
  • Once you are at the link to the EPUB file, select the link and the EPUB will be downloaded into Stanza.

To download our EPUB files using Safari (iOS4 only):

  • Install the Stanza application
  • Open Safari
  • Navigate to cnx.org and download an EPUB
  • A window will open displaying the EPUB file name and a "Open in Stanza" button.
  • Click the "Open in Stanza" button.
  • Stanza will open and the EPUB will be downloaded.
  • Select the book cover icon to open it.

Reading EPUB files in Stanza on your Apple iPad

To download our EPUB files using Stanza:

  • Install the Stanza application
  • Open Stanza
  • Select the "Get Books" button at the bottom of the screen
  • Select the "Shared" button at the top of the screen
  • Select the "Edit" button in the upper right of the screen
  • Select the "Add Book Source" option
  • Enter a name such as Connexions
  • Enter the URL to the repository such as cnx.org
  • Choose the "Web Page" option and select "Save"
  • Connexions will now be part of the "Get Books" option and the internal web browser will allow you to navigate to the EPUB you wish to download.
  • Once you are at the link to the EPUB file, select the link and the EPUB will be downloaded into Stanza.

To download our EPUB files using Safari:

  • Install the Stanza application
  • Open Safari
  • Navigate to cnx.org and download an EPUB
  • A window will open displaying the EPUB file name and a "Open in Stanza" button.
  • Click the "Open in Stanza" button.
  • Stanza will open and the EPUB will be downloaded.
  • Select the book cover icon to open it.

Reading EPUB files in Aldiko on an Android device

To download our EPUB files to Aldiko:

  • Install the Aldiko application on the Android device
  • On your PC, download an EPUB from cnx.org
  • Connect the Android device to your PC
  • Drag the EPUB file to the SD card on the Android device in this location: ebooks/import
  • Open Aldiko
  • Press the Menu button on your device and select the "Import" option.
  • Alkido will import the EPUB.
  • The EPUB will be available on your bookshelf.

Reading EPUBs on enTourage eDGe

To download our EPUB files to enTourage eDGe:

  • Open the web browser on the eDGe and download an EPUB
  • Once the EPUB is downloaded, Open the Applications tab
  • Select Storage, then download.
  • Select the downloaded EPUB and it will open in the reader.

Reading EPUBs on Sony Reader

NOTE: These instructions are for the Sont Reader model PRS 300. If you need instructions for a different module, check the Sony support page for your model.

Transfering EPUBs on Sony Reader:
  • Download the EPUB file to your PC or Mac
  • Slide the POWER switch.
  • Connect the Reader to your computer using the supplied USB cable.
  • eBook Library starts automatically and "Reader" appears in the Source view of eBook Library.
  • Click "Library" in the Source view, then click List view.
  • Click "Books" in the Source view.
  • Select the content you want to transfer from the list.
  • Drag the content from the list to "Reader" in the Source view.
  • The content is transferred to the Reader.

Reading EPUBs on Calibre

Calibre is a software application used to create and read EPUB files. It is free and works on Windows, Mac and Linux.

Using Calibre to read EPUB files:

  • Download the desired EPUB file
  • Open the Calibre application.
    • On Windows
      • Select "Start..Programs..Calibre - Ebook management..Ebook Viewer" from the Start menu
      • The Ebook Viewer application should open.
    • On Ubuntu Linux
      • Select "Applications..Office..Calibre" from the Ubuntu menu.
      • Click on the "View" button on the Calibre toolbar.
      • The Ebook Viewer application should open.
  • Click the "Open" button on the Ebook Viewer toolbar (blue open folder).
  • A File dialog window will open. Navigate to the downloaded EPUB, select it and click the "Open" button.
  • The EPUB should be displayed.

More technical information about EPUBs.

The EPUB standard is based on 3 other standards, the Open Packaging Format, the Open Publication Structure and the OEBPS Container Format.

EPUB FAQ

For answers to more questions, visit our EPUB FAQ

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